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(No Model.) 2 sheets- -sheet 1. H. A WAHLERT.

LOGOMOTIVE BRAKE.

No. 392,242. Patented Nov. 6,v 1888.

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(No Model 2 Sheets-Sheet 2.

H. WAHLERT. LOGOMOTIVE BRAKE.

No. 892,242. Patented Nov' 6, 1888".

HENRY A. WAHLERT, OF ST. LOUIS, MISSOURI, ASSIGN OR TO THE AMERICANBRAKE COMPANY, OF SAME PLACE.

LOCOMOTlVE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 392,242, dated November6, 1888. Application filed August 21, 1888. Serial No. 283,320. (Nomodel.)

T0 at whom it may concern.-

Be it known that I, HENRY A. WAHLERT, a citizen of the United States,residing at St. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Locomotive-Brakes; and I hereby declarethe following to be a full, clear, and exact description of the same,reference being bad to the accompanying drawings, wherein Figure l is aside elevation of a driver-brake embodying my invention. Fig. 2 is aplan View showing the brake as applied to the wheels of one side. Fig. 3is a vertical section of Fig. 2 on the line 00 00, looking in thedirection of the full-line arrow. Fig. 4 is a similar section on theline y 3 looking in the same direction; and Fig. 5 is an enlarged viewsimilar to Fig. 2, parts being broken away.

Like letters refer to like parts wherever they occur.

My present invention relates to the construction of that class oflocomotive driver-brakes .wherein the brake-shoes are applied to bothsides of the wheels, usually termed squeezebrakes, and has for itsobject the production of a simple and eflicient combination of floatinglevers and pull-rods for use with a horizontal cylinder,and which willapply the power uniformly to both sides of the wheels.

To this end it consists, mainly, in the combination, with a cylinderhaving two pistons, of two floating or equalizing levers, a link orfulcrum rod forconnecting the same, and pullrods for actuating the outershoes or the brakebeams thereof.

I will now proceed to describe my invention more fully, so that othersskilled in the art to which it appertains may apply the same.

In the drawings, A indicates the locomotive-frame; B, the driver-wheels;O, a bracket attached to the frame for the support of the cylinder; D, acylinder having the usual steampipeleading from port S to the engineersvalve (not shown) and provided with two oppositely-moving pistons, 11,and push-bars e 6, all of which may be of any approved or well-knownconstruction.

E indicates brake-heads suspended by hangers F from the frame A betweenthe wheels and provided with suitable shoes.

G G indicate two floating levers, one end of each pivoted to thecorresponding brake-head E, as at], and to the push-bar or piston in thecorresponding end of cylinder D, as at 9, while the opposite ends ofsaid floating levers are connected by pull -rods I I with suspendedbrake-heads K K on the outer side of the wheels or to the'transversebrake-beams L, which carry said brake-heads K K.

The floating levers G G are connected at suitable points between theirextremities by a fulcrum-rod, M, and the pull-rods I I may be supportedby hooks N, secured to the frame A at suitable intervals.

The devices, being of the character described, will operate as follows:NVhen steam is given to cylinder D, the outward movement of pistons 12will through appropriate push-bars e 6 force out the brake-heads E, andwith them the attached ends of the floating levers G, and as said leverscannot separate at their mid-length, because of the fulcrum-rod M, theiropposite ends must'move toward each other, exerting a correspondingpulling force on thepull-rods I I, which brings the outer brake-heads,KK, against the drivers, so that both inner and outer brake-shoes areapplied to the wheels with uniform and equal power.

Having thus described the nature and operation of my invention, what Iclaim, and desire to secure by Letters Patent, is

In a locomotive-brake, the combination,with a cylinder having twopistons, of two floating levers, each connected at or near one end toits respective piston, and at or near the other end to a pull-rod, and afulcrum-rod which connects the floating levers at points between theirextremities, substantially as and for the purposes specified.

In testimony whereof I hereunto affix my signature, in the presence oftwo witnesses, this 26th day of July, 1888.

HENRY A. VVAHLERT.

Witnesses:

JOHN C. H. STEVENSON, JNo. R. WILLIAMS.

